Superficial Leg Muscles Flashcards Preview

Anatomy Exam 3 > Superficial Leg Muscles > Flashcards

Flashcards in Superficial Leg Muscles Deck (25)
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1

Superior Surface of the Patella

Four quadriceps femoris muscles of the thigh converge on

2

Patella Ligament

Arising from the the inferior border and extending to the prominent tibial tuberosity.

3

Iliotibial tract

Location: posterior lateral aspect of the thigh
Function: thickening of fascia lata
Important stabilizing action at the knee joint.

4

Biceps femoris

Posterior to the iliotibial tract

5

Dorsiflexion

Motion of the foot
Location: bending the top dorsal surface of the foot to lift the toes

6

Plantarflexion

Motion of the foot
moving the bottom or sole of the foot to raise the heel

7

Inversion

Motion of the foot
rotation of the sole inward

8

Eversion

Motion of the foot
rotation of the sole laterally

9

Tibialis Anterior

Location: extends from the upper two thirds of the tibia to the medial cuneifrom and base of the first metatarsal bones
Function: acts to both dorsiflex and invert the foot

10

Shin splints

Occurs when fibers of the tibialis anterior muscles separate from the tibia

11

Peroneus Tertius

Location: originate from the fibula, tendon that crosses the top of the foot to attach to the 5th metatarsal bone
Function: assists the tibialis anterior muscle in dorsiflexion of the foot.

12

Peroneus Longus

Location: Originates at the fibula. has long tendon that surves around the lateral malleolus of the tibula, crosses the sole of the foot to reach the medial cuneiform and the first metatarsal bones

13

Peroneus Brevis

Location: originates at the fibula. Includes a tendon that curves around the lateral malleolus of the fibula, attaches to the nearby 5th metatarsal bone.

14

Peroneus muscles (function)

alll act to evert the foot

15

four muscles related to plantar flexion

Gastrocneumius, soleus, peroneus longus, and peroneus brevis.

16

Gastrocnemius muscles

Location: arises from the medial and lateral condyles of the femur to embrace either side of the popliteal fossa located behind the knee joint,
Function: has two heads, because it crosses the knee joint, Action:flexion of the leg

17

Soleus

Location: deep to the gastrocnemius and is quite flat, Originates from the tibia and fibula to join the gastrocnemius

18

Achilles (Calcaneal) tendon

Shared common tendon btwn the soleus and gastrocnemius
Location: inserts on the calcaneus

19

Gastrocnemius and soleus (Function)

calif muscles act in powerful plantarflexion of the foot, lifting the heel when we push off in walking and running

20

Extensor Digitorum Longus

Location: 4 tendons that reach the lateral four toes (Does not include the great toe)

21

Extensor Digitorum Brevis

Location: 4 tendons that reach the medial four toes.

22

Extensor Hallucis Longus and Brevis

Location: tendon to the great big toe

23

Longus muscles

Location: extrinsic (Outside the foot)

24

Brevis

Location: intrinsic (Originating within the foot)

25

Extensor Retinaculum

Holds down the tendons of the extrinsic muscles
Made of resilient fibers
Location: crossing the anterior and lateral surfaces of the ankle